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Prediction on Mooring Tension & Motion Response Characteristics of a Floating Dock in Regular Waves

규칙파 중 플로팅 도크의 운동응답특성 및 계류장력 추정

  • Oh, Young-Cheol (Dep. of Ocean System Engineering, Graduate School, MMU) ;
  • Gim, Ok-Sok (Dep. of Naval Architecture & Ocean Engineering, College of Marine Technology, MMU) ;
  • Ko, Jae-Yong (Dep. of Naval Architecture & Ocean Engineering, College of Marine Technology, MMU)
  • 오영철 (목포해양대학교 대학원 해양시스템공학과) ;
  • 김옥석 (목포해양대학교 해양공과대학 조선해양공학과) ;
  • 고재용 (목포해양대학교 해양공과대학 조선해양공학과)
  • Received : 2013.02.26
  • Accepted : 2013.04.25
  • Published : 2013.04.30

Abstract

The paper was investigated on the mooring forces(or tension) and motion response characteristics for a 8-point mooring floating dock in regular waves using a commercial code(AQWA). To achieve the aim of the research, a numerical simulation was adapted on an inner port environment condition, which the water depth is 10 meters, significant wave amplitude(1.05 m). wave period(3.85 sec), wind speed(20.21 m/s), wind and current direction ($90^{\circ}$), incident waves(${\chi}=180^{\circ}$, $135^{\circ}$ and $90^{\circ}$). The dimension of the numerical model is length(140 m), breadth(32 m), depth(14.6 m). The maximum length of a mooring line is 120m. We can expected that roll and pitch motions appeared in beam seas better than head sea. the mooring forces also indicated higher in bean seas than in head seas including wind forces.

Acknowledgement

Supported by : 한국산업기술재단

References

  1. ANSYS, Inc.(2010), AQWA User's manual. pp. 1-84.
  2. Han, Seung-Jae, In-Cheol Kim, Dea-Kyun Oh, Gyoung-Woo Lee and Ok-Sok Gim(2012), Longitudinal Motion Analysis in Multi-Directional Irregular Waves for a Training Ship using Commercial Code, Journal of the Korean Society of Marine Environment & Safety, Vol. 18, No. 6, pp. 577-583. https://doi.org/10.7837/kosomes.2012.18.2.153
  3. Koh, Hyeok-Jun and Il-Hyoung Cho(2010), Analysis of Motion Response on Tension Leg Type Automatic Feeding System in Waves, The Korean Association of Ocean Science and Technology Societies, 2010 Conference, pp. 2504-2507
  4. Oh, Young-Cheol, Ok-Sok Gim and Jae-Yong Ko(2012), Hydrodynamic-Structural Response Coupling Analysis to a Rectangle Floating Structures, Journal of the Korean Society of Marine Environment & Safety, Vol. 18, No. 6, pp. 577-583. https://doi.org/10.7837/kosomes.2012.18.6.577
  5. Sohn, Kyoung-Ho(1998), Ocean waves, hyosung Press. pp. 1-106.
  6. Yum, Deuk-Joon(2010), Dynamics of Marine Structure, Ulsan University Press. pp. 1-112.

Cited by

  1. A Study on the Characteristics of Vertical Motions due to Changes of Submerged Shape in the Multi-Purpose Small Floating Body vol.28, pp.4, 2016, https://doi.org/10.13000/JFMSE.2016.28.4.1024